B rake-beam



(No Model.)

H. B. ROBISOHUNG.

BRAKE BEAM.

Patented May 31 UNITED STATES PATENT OFFICE.

HENRY B. ROBISCHUNG, OF KALAMAZOO, MICHIGAN, ASSIGNOR TO THE NA- TIONALHOLLOW BRAKE BEAM COMPANY, OF CHICAGO, ILLINOIS,

BRAKE-BEAM.

SPECIFICATION forming part of Letters Patent No, 47 5,802, dated May 31,1892.

Application filed September 28, 1891. Serial No. 407043- (No model.)

To aZZ whom it may concern: I will now proceed to describe my inven- Beit known that I, HENRY B. ROBISOHUNG, tion more specifically, so thatothers skilled acitizen of the United States, residing at Kalain the artto which it appertains may apply mazoo,i11 the county of Kalamazoo andState the same. 5 of Michigan, have invented certain new and In thedrawings, which, for purposes of useful Improvements in Brake-Beams; andI illustration, show a trussed cambered beam, hereby declare thefollowing to bea full,clear, A indicates the compression member, B theand exact description of the same, reference tension-rod or tensionmember, and C the being bad to the accompanying drawings, inbrake-heads, all of which may be of any of the IO Whicllseveralwell-known forms.

Figure 1 is a plan view of a brake-beam D indicates the strut or post,which is comcomplete, having a strut or post embodying posed of a numberof sections or members, my invention. Fig. 2 is a detached View,preferably four in number, so formed as to partly in section, of a strutor post, showing interlock and support each other.. When 15 thecharacter of the union between the lateral composed of four sections ormembers, there and end sections thereof. Fig. 3 is a detail arepreferablytwoendmembersViz.,1,wh1ch perspective view of the partscomposing the is the collar for the compression member A or strut orpost. Fig. 4 is a transverse section beam-collar, and 2, which is thenose-piece and of the post or strut on the line w 00, Fig. 1, informsthe seat for the tension-rod B-and the 20 dicating by dotted lines thereversible charlateral sections 3 3, which form the support acter of thestructure. Fig. 5 is an elevation of the brake-lever L. The beam-collar1 and of the preferred form of beam-collar. nose-piece 2 are eachprovided with an annu- Like symbols refer to like parts wherever larflange 1 2 adapted to enter correspondy ing recesses in the twin lateralsections 3 3,

2 5 My' invention relates to trussed brakeand the nose-piece 2 may haveeithera curved beams, and is particularly directed to the seat or a slotfor the passage of the tensionproduction ofastii'f and strong reversiblepost rod B, according as required by the general or strut therefor andto means whereby all character of thestructure. The beam-collar slackbetween the coacting parts is taken up, 1 in ordinary trussed beams andeven in cam- 0 so as to uniformly distribute the strains and boredbeams, if desired, may be the usual avoid torsional strains on thecompression closed collar; but in case of camberedbeams member of thebeam. I prefer to form the same with a slot 1 (see To this end the mainfeature of my inven-' Fig. 5) to obtain an open spring or clamptionembracesthe combination, in a strut or collar, so that when said endmember or beam 8 5 post, of lateral and end sections or members, section1 is clamped by the lateral sections 3 together with means for causingthe said sec- 3 all slack between the beam and strut shall tions to bindupon and support each other, be taken up. whereby a rigid and strongstructure is ob- 3 3 indicate the lateral sections which contained.stitute the intermediate portion of the post 40 A secondary feature andone which relates and connect the end sections 1 and 2. Each moreespecially to cambered brake-beams, of said sections is provided with arecess at embraces the combination, with a strut or each end, as at a b,to receive the annular post, of a divided compressible or clampflanges 12 of the end members 1 and 2, is beam collar adapted to hug thecompression recessed, as at 3', to form a lever-slot to ac- 5 member ofthe structure and take up any commodate the brake-lever L, and shouldslack between said member and the strut or have bolt-holes 3 and 3 toreceive the clamppost. ing-bolts 4 (or equivalent clamping mechan- Thereare other minor features of invenism should be provided to secure themem- 7 tion relating to particular features of the comhere together) andthe pivot 5 of the bracket- 5c bining parts, all as willhereinafter morefully lever L.

appear. in addition to the features before specified I prefer to form oneither one or both of the lateral pieces 3 3 between the brake-leverslot and the bolt-holes 3 3, preferably adjacent to said bolt-holes 3 3,ribs or heads 6, which, coacting with the bolts 4, cause the bottoms ofthe recesses a a and b b to bind on the annular flanges 1 2" of the endmembers 1 and 2, While at the same time the said ribs or heads 6 preventthe lateral members or sections 3 3 from binding on or impeding themovement of the brake-lever L.

The construction of the several members or sections of the post orstrutbeing substantially such as hereinbefore specified, the parts areassembled, as indicated in Fig. 1 of the drawings, and combined by meansof the bolts 4 or their equivalents, the brake-lever L having first beenset to the right or left, as desired, after which the nuts 4 aretightened up by suitable means. The tightening of the nuts next to thecompression member A of the beam will not only close the clamp-beamcollar 1, so as to take up all slack between the compression member andthe post, but will also cause the lateral members of the post to bind onand embrace the annular flanges 1 of the beam-collar, while a liketightening of the nut 4 next the tension-rod B will cause the lateralmembers 3 3 to bind on and embrace the annular flange 2" of thenose-piece 2, so that a practically rigid and integral strut is obtainedwherein all slack is taken up and the whole body of metal in thestructure bears an equal and uniform strain.

WVhen it is desired to change or shift the lever, so as to change thestrut from a righthand to a left-hand strut, it is only necessary toloosen the clamping-nuts 4, turn the strut to any desired position, andagain tighten the nuts, and to facilitate the setting of the lever atany desired angle indicator-notches may be formed on the shoulder K ofthe nose-piece 2.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. A strut or post for trussed brake-beams, composed of lateral membersor sections, interposed end members, and means for causing composed ofend members having projecting flanges, lateral members having recessesto receive the projecting flanges of the end members, and means forclamping the several members together, substantially as and for thepurposes specified.

A strut or post for trussed brake-beams, composed of lateral members,one of which is provided on its inner face with transverse ribs orequivalent projections, interposed end members, and means for causingthe lateral members to bind on the interposed end members, substantiallyas and for the purposes specified.

4:. A strut or post for trussed brake-beams, composed of end members,each provided with an annular flange, lateral members, each of which isprovided with semicircular recesses adapted to receive the annularflanges of the end members, and means for clamping the parts together,substantially as and for the purposes specified.

5. A strut or post for trussed brake-beams, composed of end members,each of which is provided With an annular flange, lateral members, eachof which is provided with a semicircular recess adapted to receive theannular flanges of the end pieces and one of which has transverse ribson its inner face, and means for clamping the parts together,substantially as and for the purposes specified.

6. In a trussed brake-beam, the combination, with the tension andcompression members, of an interposed strut or post, and a clamp beamcollar for connecting the strut and compression member, substantially asand for the purposes specified.

In testimony whereof I affix my signature, in presence of two witnesses,this 26th day of September, 1891.

HENRY B. ROBISOHUNG.

Vituesses:

E. T. WALKER, E. B. LEIGH.

